Centrifugal liquid nozzle



Nov. 17, 1953 w. L. WILMl-:s 2,659,631

CENTRIFUGAL LIQUID NozZLE Filed Sept. 19, 1950 Patented Nov. 17, 1953CEN TRIFUGAL LIQUID NOZZLE William L. Wilmes, Chicago, Ill., assigner toBinks Manufacturing Company, Chicago, Ill., a corporation of DelawareApplication September 19, 1950, Serial No. 185,519

1 Claim. 1

The present invention relates to nozzles, such as those for causing awhirl of liquid in a chamber thereof having a portion concentric withthe outlet oriiice and a portion that is offset or eccentric to suchoutlet orice of the device.

An object of the invention is to provide a novel device which has theadvantage of having a capacity of spray producing from a much smallerwhirl chamber than theretofore, and which new device can be machinedfrom bar stock with reduced machining costs as Well as a saving inmaterial costs.

Another object of the invention is to produce a novel nozzle structureas herein disclosed and which can be regarded as novel improvements overparticularly those disclosed in United States Patents No. 1,938,000,granted December 5, 1933, to Fritz Wahlin, on Hollow Cone SprayingNozzle; and No. 1,961,408, granted June 5, 1934, to Fritz Wahlin, onSpray Head.

Other objects, advantages, capabilities, features and the like arecomprehended by the invention as will later appear and as are inherentlypossessed by the invention.

Referring briefly to the drawings:

Fig. 1 is a side view in elevation of a device constructed in accordancewith the invention;

Fig. 2 is an end view in elevation of the device shown in Fig. 1;

Fig. 3 is a longitudinal sectional View taken in a plane represented byline 3-3 in Fig. 4 of the drawings;

Fig. 4 is a top plan View of the device as shown in Figs. 1 and 3,without the connecting tube shown in Fig. l;

Fig. 5 is a horizontal sectional View taken in a plane represented byline 5-5 in Fig. 1 of the drawings;

Fig. 6 is a side view, similar to that of Fig. 1, of the inventionhaving a male type of entry end portion in lieu of the female type shownin Figs. 1, 2, 3, 4 and 5;

Fig. '7 is a longitudinal sectional view taken in a plane represented byline 'i--l in Fig. 8 of the drawings;

Fig. 8 is a top plan View of the device shown in Figs. 6 and '7, withoutthe connecting tube and coupling shown in Fig. 6;

Fig. 9 is a horizontal sectional view taken in a plane represented byline 9-9 in Fig. 6 of the drawings.

Referring more in detail to the drawings the device is shown ascomprising a chamber or head portion I0 (Figs. 1-5), or II (Figs. 6-9),and an entry end portion l2 (Figs. 1-5) or I3 (Figs. 6-9) with anintermediate connection portion I4, I5, as shown.

The entry end portion I2 has an entry chamber I6 (see Figs. 2, 3, 5)which may be suitably threaded or otherwise formed for the couplingthereto a liquid supply duct or pipe I'I. The entry end portion I3 (seeFigs. 6, 7, 8, 9) may be suitably externally threaded or otherwiseformed for the receiving of a connecting or coupling means I8 (see Fig.6) connected to a duct or pipe I9 (see Fig. 6) for supplying the uid, asliquid, the end of the portion I3 also having a tapered or similar entryportion 20 having communication with the duct I9 (see Figs. 6, 7 and 9).

In both cases, the chamber portion IU, II, has an upper opening 2|, 22,which may be threaded to receive a nozzle member or element 23 (the samein both cases) having suitable threading to t the threads 2 I, 22, asshown particularly in Figs. 3, 7. The head of the nozzle member 23 mayhave multiple faces for engagement of a suitable tool, as a wrench, forscrewing or unscrewing the member 23 to or from place.

In the nozzle member 23 is provided a tapered nozzle passage 24 taperingfrom the inner end of the member 23 to the outer or top end portionthereof, where is provided a short throat part or the like 25 which ispreferably cylindrical as shown. At the top of the nozzle member 23 maybe a thin or shallow well or like part 26 of greater diameter than thatof the throat or cylindrical portion 25, to oier no resistance orinuence on the stream whirling or rotating in the throat or neck portion25 as it issues from the nozzle part 24 with a whirling or spinningmotion or action.

Within the head portion I0, II are provided round or cylindricalchambers, comprising a lower chamber 21 which is eccentric to the nozzlepassage 24, or in other words the axis of the chamber 21 is eccentric toor non-coaxial with the axis of the nozzle passage 24, or in other Wordsreferring to Figs. 5 and 9, the locus of the axis of the nozzle passage24 is represented at point 28 (see Figs. 5 and 9) and the locus of theaxis of the chamber 27 is represented at the point 29 (see Figs. 5 and9), so that the center of the chamber 2l is eccentric to the nozzlepassage 24.

Just above the chamber 2i is provided another` chamber 39 also of roundor cylindrical form and in communication at its lower end with the upperend of the lower chamber 2l and at its upper end with the lower end andlarge 3 end of the nozzle passage 24. See Figs. 3 and 7. The axis ofthis chamber 33 is coaxial with that of the nozzle passage 24.

Communicating with the chamber 30 is a laterally and tangentiallylocated fluid entry passage 3 I, 32 of which the passage 3| has itsentry 33 end in or at chamber i6 (see Figs. 3, 5) and of which thepassage 32 has its entry 34 in or at the tapered entry 29 (see Figs. 7and 9), and of which each of passages 3 l 32, has its outlet end ordischarge end 35, 36 tangential to the Wall of the chamber 3D (see Figs.5, 9), so that as the uid passing through the passage 3|, 32, it willenter the chamber 3!! at a tangent to .cause the fluid to rotate or eddyin the chamber 39.

t has been found that when a fluid rlows in tangently in a chamber likechamber 30, that there is a reaction of the iiuid against the lower partor bottom of the chamber St, whether the lower part of such chamber bedepressed and of any form, such as a cone or the like, and also anerosion or the like, perhaps due to the reactive force set up when thefluid was projected out the nozzle, such as a nozzle 24 as here shown,and at the same time the spray from the nozzle would not be even orbalanced.

The inventor herein discovered that to provide a chamber, as chamber"2l, below or beneath the entry chamber, as chamber 33, and also havethe axis of such lower chamber eccentric to the axis of the upperchamber, as chamber 36, or eccentric to the axis of the passage of thenozzle, as nozzle passage 24, that such disadvantages were avoided. Thepresent device herein disclosed sprays the iiuid with a balance oruniformity and there is no eroding or wearing away of the lower part cithe device as heretofore. It seems that by the forming of a mass ofiiuid, which also moves or rotates as it does in the upper chamber, aschamber 3D, it seems to act as a sort oi buffer or the like, and whileit might lower the rotative speed of the fluid in the upper chamber, itseems to take whatever force or shock that might be present and tonesthe out- 4 going stream through the nozzle part 24 to issue evenly andbalanced or the like, and without any eroding or injury to the lowerportion of the device.

While I have herein described and upon the drawings shown anillustrative embodiment of the invention, it is to be understood thatthe invention is not limited thereto but coinprehends otherconstructions, details, arrangements of parts, features, and the likewithout departing from the spirit of the invention.

Having thus disclosed the invention, claim:

A spray nozzle comprising a body having therein a circular whirlingchamber axially aligned with a discharge outlet at one side thereof, acircular control chamber of smaller diameter han the whirling chamber atthe other side of said whirling chamber and eccentric thereto, saidwhirling chamber having an inlet passage leading thereto tangentially toinject liquid into the whirling chamber for discharge through saiddischarge outlet in whirling form, said control chamber having at itsjuncture with the whirling chamber an annular surrounding shoulder ofnon-uniform width throughout its circumference constructed and arrangedto provide a uniform ilow of liquid through said discharge outlet withminimum wearing away of the walls deiining said chambers, said controlchamber and shoulder being formed and arranged whereby liquid isdis-charged from the inlet passage into the whirling chamber adjacentthat portion oi said shoulder having a relatively small width.

W'LLIAM VELA/IES.

References Cited in the le of this patent UNITED STATES PATENTS NumberName Date 2,247,897 W'ahlin July l, lElll-l FOREIGN PATENTS NumberCountry Date 201,608 Great Britain July 2U, 1923

